Air conditioning apparatus



July 5, 1938.

G. M. MARR ET AL AIR CONDIIT IONING APPARATUS Filed Jul 28. 1934 2Sheets-Shed 1 ATTORNEY July 5, 1938. G. M. MARR EI'YAL 2,

AIR CONDITIONING APPARATUS Filed July 28. 1934 2 Sheets-Sheet 2 ORNEYPatented July 5, 1938 I UNITED STATES PATENT OFFICE AIR CONDITIONINGAPPARATUS George M. Marr, New York, and Arthur P. Marr, Brooklyn, N. Y.,assignors to Air Conditioners, Inc., New York, N. Y., a corporation ofDelaware Application July-28, 1934, Serial No. 737,383

2 Claims. (01. 62129) The device, the subject of this invention we terman air conditioning apparatus and for the reason that it performs anumber of the functions that are important in air conditioning.

Air conditioning in its broadest sense, consists of a number oftreatments depending of course upon the initial condition of the air andthe conditions required at the time that the conditioning or treatmentis completed.

quired for operating the blower motor and as it is entirely portable, itis provided with a casing formed in two major parts. The part indicatedat l we willrefer to as the upper casing, and the part indicated at 2 wewill refer to as the lower casing.

Within the upper casing I we arrange a container 3, which maybe adaptedto receive solid CO2 sometimes referred to as dry-ice, or water- Thepresent apparatus and t one which we ice or even cold water, and thiscontainer is prowere about to describe will accomplish a number videdwith an efficient cover or su t n of the desired purposes, such forinstance as upon a gasket 5, the gasket in turn resting upon filteringthe air if that is desired, of dehumidifya lip or flange 6 of thecontainer 3. We desire ing the air, of cooling 11; during dehumidmcationthat this container be not in contact with the and circulating it in adesired direction after it Outside casing I and for that reason the 13has been filtered, cooled and dehumidified. Our tamer 3 is insulatedfrom the casing I by h filtering is not in this instance air washing,butstrips 75 and 8 and .9150 by the insulation 9 the primary filtrationi for t purpose of which surrounds the three sides of the conmoving, thelarger particles of dust or foreign miner e ove 4. may be hinged assugmatter. The dehumidification also accomplishes gested at Secured tothe bottom of the container 3 and extending downward in'the casing l,are a plurality of fins or plates. These fins or plates are relativelythin and are spaced apart a desired distance which will of course bedetermined by the size and capacity of our device. In Figure 1 aplurality of these plates are shown, only one of which is indicated bythe reference character II and it will be noted in Figure 2, that theseplates while extending more than the full width 3 of the container 3,are provided with a slot l2 into which the uppper portion of the fan orblower I3 is introduced. The object of this construction is best statedas follows:

The plates II are secured to the bottom of the container 3 in anymanner, such as riveting as suggested at H, soldering or in the mannershown in Figure 5. These plates conduct the heat from the air passingthru the fan to the refrigerant purification as in the dehumidificationcool dry surfaces are provided for the removal of the. moisture orhumidity and so in turn remove much of the foreign matter and smallerdust particles in the air. The circulation is not only for the purposeof causing air to' contact with the cooling and dehumidifying means, butis also for the purpose of distributing the air and we provideadirectional device for the breaking of the air streams as and when.desired and thus we have described the objects of the invention, theconstruction of which will be set forth in the specificationwhich'follows and the accompanying drawings should be referred to for acomplete understanding of the specification.

In the drawings.

Figure 1 is a fractured front elevation of our device;

Figure 2 is a side elevation generally in section of the completeddevice. within the container 3 or as it might best be said, Figure 3 isan enlarged view of a damper the plates are continually retained cold bythe mechanism. I refrigerant, so therefore air passing between theFigure 4 shows an enlarged view of th h tt plates will be cooled to suchan extent that the mechanism. a humidity in the air will be depositedupon the Figure 5 is a fractured sectional view showing 'p t s t dr paway't r m as t m ture 5 a modified construction of a part.

Figure 6 shows a device of a somewhat modified construction and is afractured side elevae builds up on the plates. The recess I2 in all ofthe plates makes it possible to provide an overhanging means l'l' at theintake side of the fan tion, and or blower, pre-cooling to an extent theair drawn Figure .7 is a front elevation of the fins or prointo thedevice and materially increasing the eflijections. ciency of the device,both as an air cooler and a dehumidifier.

At the intake side of the fan we provide a screen l5 which'may or maynot be an air filter as shown in Figure 6. We prefer however that itSimilar reference numerals indicate like parts in all the figures wherethey appear.

Our air conditioning device is entirely portable except that anelectrical connection is reshould to an extent at least filter the air.Forward of the fan is a baflie shown at E5 and intended'to direct theair out of the horizontal to a verticalcourse, changing the direction ofthe air flow may and probably does reduce the speed and volume of theair, but it also accomplishes a more important purpose, it insures thatall of the air discharged from the fan will pass between the fins orplates II and will because of the peculiar shape of the plates, remainin contact therewith an appreciable period of time, with the result thatgreat cooling and dehumidification results.

Leaving the fan I3, the air travels upward directed by the baflie l6 andbetween the plates II and is discharged through a shutter aperture II.In both figures the shutters are shown closed, but the dotted lines i8in- Figure 2 suggest that the shutters may be opened to direct the airas desired, the shutters being operated by the handle l9, operating alink to which all of the shutters are connected by means of bell cranklevers as shown at M, so that the shutters operate simultaneously fromthe single lever l9.

The upper portion of the casing i is supported upon the lower casingmember 2 as shown in Figure 2, but is insulated from the lower casing bya gasket 22 not only for the purpose of conserving energy, but for thepurpose of quieting the device by dampening the mechanical vibrations.The lower casing member 2 is provided with a shelf 23 to which the uppercasing member i is secured. The lower casing member projects upwardslightly above the juncture of the two casings and the space 24 betweenthese two basings allows any moisture of condensation that might collecton the upper casing to pass down- Ward to the lower casing 23, fromwhence it is allowed to drip into a suitable container. If dry-ice isused as the refrigerant, it is desirable to introduce air into therefrigerant container 3 to insure controlled sublimation of the dry-ice.

At 25 we show a channel and Within the container dand local to the upperend of the channel is an adjustable damper member 26 as shown in Figure3 and which controls the passage of air through the channel and into thecontainer 3. The discharge of the gas is through the pipe 2! and thispipe is controlled by a valve 28, which valve will be allowed to remainopen if d e is employed, but will be closed it water-ice is employed,except at that time that it is desired to draw off the water.

At 29 we show a container for the water of condensation ordeh'umidification. This container is a drawer arranged in the lowercasing member 2 and slideable upon suitable supports 30 and 35. Thisdrawer is provided with a plurality of splash bafles as indicated at 32.The water from the ice melting in the container 3 may be discharged intothe drawer 29 by operation of the plunger operated valve 28. The switch38 is intended for the control of the fan motor 34 and to increase theflexibility and the satisfactory usefulness of our device, the fan motormay be a two speed or a multiple speed motor as suggested at the switchit.

May we call attention to the angular arrangement of the upper frontplate at, the arrange! ment of which is not only for appearance, but isfor the purpose of reducing discharge friction and for the furtherpurpose of increasing the angles to which the shutters may direct theair.

. May we also call attention to the continuation of the discharge pipe-2l which is carried back and forth behind the lower edges of the fanl3.

When water ice is used possibly no appreciable cooling of the air willresult from this circuitous arrangement of the pipe 21, but when dry iceis used the passage of the gas through this pipe will assure that all ofthe cooling effort contained even in the gas, will be removed and thegaswill be discharged only after its usefulness has been exhausted.

To obtain the highest possible efficiency, a direct metallic contact ofthe plates H with a refrigerant is desired. We may accomplish this aspreviously stated, but another way and that shown in Figure 5 is to havethe plates ll actually pass through the bottom of the container 3. Eachplate is then bent over at the top as indicated at b and may then besecured in place by soldering, thus'the refrigerant rests immediatelyupon the plates and the maximum cooling effect is obtained.

In Figure 6 we show a device of somewhat difierent construction. In thisdevice the casing 31 is continuous, that is it is not a two part casing.The front panel 33 is however arranged at an angle at the point wherethe air'is discharged. The fan or blower 39 in this construction isarranged at an angle and this makes it possible to employ continuousfins or plates as shown at 40, these plates being secured to therefrigerant container 4! in any manner desired, but it is very desirablethat the connection between the fins or plates 40 and the refrigerantcontainer, be a good thermal conducting joint.

The-plates or fins, an end elevation of whiph is shown in Figure 7, arecorrugated as indicated at 42, and while such corrugations will slowdown the passage of air to a slight extent, they will also assure thatthe air will contact with the plates and that no air film will form onthe plates. As a. result of recent experimentation, we are led tobelieve that corrugated fins or projecting plates are very desirable andfor that reason they may be employed with the device shown in theearlier Figures land 2. The fan or blower motor 39 when arranged at anangle should be provided with a'thrust bearing as indicated at 3. v

The space M between the refrigerant container 8! and the outer wall ofour cabinet is in this construction closed by means of a member of adesirable shape. In closing this space we depend upon dead or impoundedair as the insulating means, and such insulating means would be arrangedat all sides of our reirigerant container ll except the bottom thereof.At it we show an air filter consisting of two sheets of screen with afiltering medium arranged therebetween. This filtering medium may becurled hair, steel wool or any other type of filter and isshown toindicate that a filter may well be employed with our device.

The drain pipe d? is in this construction arranged in front of theblower 39 and between the blower and the fins or plates ti) and may becir-- cuitous in this space in any direction, and while the arrangementof this tubular member ill is desirable with water-ice, it isparticularly desirable if dry-ice is used, as it assures that the gas ofsublimation will be retained until all of its desirable cooling effectis removed therefrom.

In Figure 1 we show one horizontal run or" the drain pipe extendingbehind the lower portion of the fan blades, but in this Figure 6 weindicate that we may have aplurality of horizontally extended pipelines, in fact we have shown four horizontal pipes 49 and 50 areconnected atone end by means of a short length of pipe or nipple 53, anda longer pipe S4 connects one end of the horizontal pipe 50 with thenext successively horizontal pipe -l.. v

In the short nipple '55 which connects the pipe 5| and 52, we mayintroduce a riser 56 arranged parallel to-the drain pipe 41. This riserextending upward into the refrigerant chamber 41 When water-ice .is usedas the refrigerant or when a liquid is contained in our device, thevalve 28 will be retained closed and under this conditionthe water fromthe ice will circulate through the pipes 41, I! to 56 and we have foundthat when the air delivered by the fan or "blower 39 is quite warm, avery active circulation and recirculation will take place in these p pWhen dry-ice is used as the refrigerant, we recommend that the uppermostopen end of the pipe 56 be closed :and the valve Ii-allowed to remainopen. assure that the gas of sublimation is retained in the pipe run fora suitable length of time as above referred to.

As this device shown in Figure 6.:ls smaller and somewhat lighter thanthe device shown in Figones 1 and 2, we may omit the casters or rollersshown in Figures 1 and 2 and substitute balls or ball shape metallicmembers or even rubber foot pieces as shown at 48; The operation of thisdevice is in all respects similar to the device previously described.However even though .a number of structural changes or modifications aremade,

they are intended to increase rather than decrease the efiiciency.

The plates It may be extended downward for a greater distance than thatshown. 7

The shape of our device may be changed at will and the parts arrangedto-accommodate such changes.

We have shown but four shutter plates 18. but the number of plates maybe increased or decreased as may the area thereof.

Having carefully and fully described our invention, what we claim anddesire to obtain is:

1. An air conditioner'comprising a casing, a blower arranged therein, arefrigerant container arranged therein, a plurality of heat conductingplates secured to said refrigerant container and projecting into thepath of both the intake and exhaust of said blower.

2. An air conditioning device comprising a container, an air blowerarranged therein, a refrigerant container within said casing andinsulated therefrom, a plurality of thermal conductors secured to saidrefrigerant container, means for directing the air from the blower incontact with said thermal conductors, and means for directing the airupon its discharge from the said casing, and means for collecting thewater of dehumidification from said thermal conductors and a tubularmember connected to said refrigerant container and passing throughcertain of said conductors.

GEORGE M. MAR-R.

ARTHUR P. MARR.

